Finding the Fourth Proportional to 221,040.75, 305,036.24 and 120,438.75
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Solution
The fourth proportional to 221,040.75, 305,036.24 and 120,438.75 is: 166,205.48
Step by Step Solution
- Step 1: Write the proportion equation
221,040.75 : 305,036.24 = 120,438.75 : x - Step 2: Convert to fraction form
221,040.75/305,036.24 = 120,438.75/x - Step 3: Cross multiply
221,040.75x = 305,036.24 × 120,438.75 - Step 4: Simplify right side
221,040.75x = 36,738,183,450.30 - Step 5: Solve for x
x = 36,738,183,450.30/221,040.75 - Step 6: Final answer
x = 166,205.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.